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From "Ufuk Celebi (JIRA)" <j...@apache.org>
Subject [jira] [Created] (FLINK-5045) Latency markers emitted after output buffer pool destroyed
Date Wed, 09 Nov 2016 21:59:58 GMT
Ufuk Celebi created FLINK-5045:
----------------------------------

             Summary: Latency markers emitted after output buffer pool destroyed
                 Key: FLINK-5045
                 URL: https://issues.apache.org/jira/browse/FLINK-5045
             Project: Flink
          Issue Type: Improvement
            Reporter: Ufuk Celebi


In a log of test runs I saw the following warning:

{code}
18:01:42,873 WARN  org.apache.flink.streaming.api.operators.AbstractStreamOperator  - Error
while emitting latency marker
org.apache.flink.streaming.runtime.tasks.ExceptionInChainedOperatorException: Could not forward
element to next operator
	at org.apache.flink.streaming.runtime.tasks.OperatorChain$ChainingOutput.emitLatencyMarker(OperatorChain.java:386)
	at org.apache.flink.streaming.runtime.tasks.OperatorChain$BroadcastingOutputCollector.emitLatencyMarker(OperatorChain.java:449)
	at org.apache.flink.streaming.api.operators.AbstractStreamOperator$CountingOutput.emitLatencyMarker(AbstractStreamOperator.java:740)
	at org.apache.flink.streaming.api.operators.StreamSource$LatencyMarksEmitter$1.run(StreamSource.java:134)
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
	at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308)
	at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180)
	at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.RuntimeException: Buffer pool is destroyed.
	at org.apache.flink.streaming.runtime.io.RecordWriterOutput.emitLatencyMarker(RecordWriterOutput.java:99)
	at org.apache.flink.streaming.api.operators.AbstractStreamOperator$CountingOutput.emitLatencyMarker(AbstractStreamOperator.java:740)
	at org.apache.flink.streaming.api.operators.AbstractStreamOperator.reportOrForwardLatencyMarker(AbstractStreamOperator.java:600)
	at org.apache.flink.streaming.api.operators.AbstractStreamOperator.processLatencyMarker(AbstractStreamOperator.java:582)
	at org.apache.flink.streaming.runtime.tasks.OperatorChain$ChainingOutput.emitLatencyMarker(OperatorChain.java:383)
	... 10 more
Caused by: java.lang.IllegalStateException: Buffer pool is destroyed.
	at org.apache.flink.runtime.io.network.buffer.LocalBufferPool.requestBuffer(LocalBufferPool.java:149)
	at org.apache.flink.runtime.io.network.buffer.LocalBufferPool.requestBufferBlocking(LocalBufferPool.java:138)
	at org.apache.flink.runtime.io.network.api.writer.RecordWriter.sendToTarget(RecordWriter.java:126)
	at org.apache.flink.runtime.io.network.api.writer.RecordWriter.randomEmit(RecordWriter.java:102)
	at org.apache.flink.streaming.runtime.io.StreamRecordWriter.randomEmit(StreamRecordWriter.java:104)
	at org.apache.flink.streaming.runtime.io.RecordWriterOutput.emitLatencyMarker(RecordWriterOutput.java:96)
	... 14 more
{code}

See {{2.log}} in https://s3.amazonaws.com/flink-logs-us/travis-artifacts/uce/flink/1205/1205.8.tar.gz
(part of build https://travis-ci.org/uce/flink/jobs/174550925, which failed for another reason).

The warning hint at a problem with the life cycle of the latency markers.



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